import os
from ..subprocess_code_interpreter import SubprocessCodeInterpreter

class AppleScript(SubprocessCodeInterpreter):
    file_extension = "applescript"
    proper_name = "AppleScript"

    def __init__(self):
        super().__init__()
        self.start_cmd = os.environ.get('SHELL', '/bin/zsh')

    def preprocess_code(self, code):
        """
        Inserts an end_of_execution marker and adds active line indicators.
        """
        # Add active line indicators to the code
        code = self.add_active_line_indicators(code)

        # Escape double quotes
        code = code.replace('"', r'\"')
        
        # Wrap in double quotes
        code = '"' + code + '"'
        
        # Prepend start command for AppleScript
        code = "osascript -e " + code

        # Append end of execution indicator
        code += '; echo "## end_of_execution ##"'
        
        return code

    def add_active_line_indicators(self, code):
        """
        Adds log commands to indicate the active line of execution in the AppleScript.
        """
        modified_lines = []
        lines = code.split('\n')

        for idx, line in enumerate(lines):
            # Add log command to indicate the line number
            if line.strip():  # Only add if line is not empty
                modified_lines.append(f'log "## active_line {idx + 1} ##"')
            modified_lines.append(line)

        return '\n'.join(modified_lines)

    def detect_active_line(self, line):
        """
        Detects active line indicator in the output.
        """
        prefix = "## active_line "
        if prefix in line:
            try:
                return int(line.split(prefix)[1].split()[0])
            except:
                pass
        return None

    def detect_end_of_execution(self, line):
        """
        Detects end of execution marker in the output.
        """
        return "## end_of_execution ##" in line